Experimentally Determining the Relationship between Hydrodynamic Drag and Salinity

International Journal of Applied Physics

© 2024 by SSRG - IJAP Journal

Volume 11 Issue 2

Year of Publication : 2024

Authors : Agastyaa Vishvanath

10.14445/23500301/IJAP-V11I2P101

How to Cite?

Agastyaa Vishvanath, "Experimentally Determining the Relationship between Hydrodynamic Drag and Salinity," SSRG International Journal of Applied Physics, vol. 11,  no. 2, pp. 1-7, 2024. Crossref, https://doi.org/10.14445/23500301/IJAP-V11I2P101

Abstract:

This research paper aims to explore the relationship between the salinity of water and the Hydrodynamic Drag experienced by bodies moving through it. More specifically, it attempts to experimentally establish a generally applicable quantitative relation between the two and hypothesize the potential causes for it. This was done through experimentally determining the variation in fluid density and coefficient of Drag with salinity, as these are the only two variables that affect Drag force that has the potential to vary with salinity. The experiment involved measuring the mass and volume of saline solutions and then measuring the amount of time taken for a body with known characteristics to fall under gravity through a specified height of saline water. The data showed that Hydrodynamic Drag does appreciably increase with salinity in an approximately linear fashion. Moreover, the individual trends in density and coefficient of Drag further demonstrated that it was purely the increase in density with salinity that was responsible for the observed increase in Drag.

Keywords:

Salinity, Hydrodynamic Drag force, Drag coefficient, Fluid density, Differential equation modelling.

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